One of the major contributors to CTE is repeated blows to the head from activities like football tackling. Football players are particularly prone to getting CTE because they often receive multiple hits to their heads during games or practices from other players or hard surfaces. This can put them at risk for developing long-term brain damage. Additionally, some studies have suggested that playing tackle football before age 12 may be associated with an elevated risk for cognitive difficulties later in life due to repeated exposure to subconcussive impacts over time.

Given this evidence on how early-onset tackle football may play a role in increasing one’s risk of developing CTE later in life, there has been much discussion about whether or not there should be limitations placed upon when children can start playing tackle football professionally or semi-professionally (like organized leagues). While some organizations have already taken steps towards mitigating younger athletes’ exposure to potential head injuries by implementing stricter rules within their own leagues—such as USA Football transitioning its flag leagues into ‘Contact Limited Tackle Football’ which decreases body collisions between players—other organizations are calling for a ban on allowing children under 13 from participating in any type of tackle activity until further research can be conducted on vulnerable young populations exposed to contact sport activities over time.

In conclusion, while there are still many unknowns regarding how exactly head trauma leads directly to CTE down the road, we do know enough about this condition at present that certain precautions need be made if we want future generations of athletes safe from potential harm due to these types of sports activities; namely delaying the starting age for professional/semi-professional tackle football until those athletes have reached an appropriate level maturity where they understand both risks involved and ways they can reduce their chances of potentially sustaining long term brain damage related injuries such as CTE down the line.